Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22219266aeff9c6…

MALICIOUS

PDF

42.2 KB Created: 2021-05-16 07:04:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 988c5faeb0c1ad320ae97127c99d8b48 SHA-1: 5257a5860ee46432732787eb278da9bdafee2171 SHA-256: c22219266aeff9c6095170bfb2be7b0e8cb51a47dcc56375f4284d9958a14928
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure for a "Real Robux Generator" and explicitly requests recovery secrets or private keys, indicating a phishing or credential harvesting attempt. The embedded URL directs users to a site associated with game hacks and generators, further supporting the malicious intent. The document's structure and content strongly suggest it is designed to trick users into divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/real-robux-generator-game-hack PDF link annotation
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/roblox-getting-hacked_GM431946152.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://e-learning2.man1kukar.site/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://Buy.HoaxMC.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004901.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4901 24924 bytes
SHA-256: b3b47ee4f4b0c2dbf842db8250d039354d0916c378cba75e552f6f746cdc3171
font_01_sfnt_off000082ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AB 18256 bytes
SHA-256: 906ea21e34abb327d49597c14d5b17b7cc18bd5fadfd873c2347cb1d5c8b4ad6

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